Dr Brown\'s Options+ Anti-Colic Vent Brushes for easy cleaning of the vent and resevoir. 4 pack. Dr Brown\'s Options+ Anti-Colic Vent Brushes pr easy cleaning of the vent and reservoir in the Dr Brown\'s Options+ bottles. The pack of 4 brushes help you to clean in the small parts of the Dr Brown\'s venting system and ensure a good level of hygiene for your baby\'s bottles. Key features of Dr Brown\'s Options+ Anti-Colic Vent Brush Can be used with all Dr Brown\'s bottles Keeps the vent and reservoir clean Dishwasher safe Allows the bottle to work properly Four brushes in a pack